Evonik Roehm Gmbh

Evonik Rohm Gmbh

Degussa Aktiengesellschaft

Dequssa Ag

Evonik Operations Gmbh

Peter Neugebauer

Heike Heeb

Ingrid Kizewski

Dirk Poppe

Günter Schmitt

Bruno Keller

Tadeusz Von Rymon Lipinski

Peter Reinhard

Sybille Scholl

Ruth Kernke

Frank Beissmann

Helmut Mangold

Wolfgang Lortz

Christoph Batz-Sohn

Juergen Meyer

Werner Will

Gabriele Perlet

Guenter Schmitt

Gerrit Schneider

J&uuml;rgen Meyer

Alexander Klein

Gilbert Kühl

Dieter Raab

Gilbert Kuehl

Martin Steigerwald

Klaus Ramesch

Gunter Schmitt

Gilbert Kuhl

Frank Beißmann

The present invention relates to a novel process for producing ceramic materials, in particular refractory materials having a reduced relative density. In particular, the invention relates to a process for producing light, refractory materials having non-contiguous pores based on shaped and unshaped materials. These materials can be used as working lining in high-temperature applications. The process is based on the production of spherical, closed and isolated pores in the microstructure of the material. The pores having a pore diameter which can be set in a targeted manner are generated by use of polymer particles, in particular polymethacrylates, in particular polymers or copolymers prepared by means of suspension polymerization, as pore formers which can be burnt out. The polymers or copolymers are present in the form of small spheres having a defined diameter. The introduction of isolated spherical pores allows the production of ceramic materials having a sometimes significantly reduced relative density and improved corrosion resistance and better mechanical strength compared to the prior art. The specific, closed pore system at the same time contributes to reducing the thermal conductivity of the ceramic materials. In addition, the novel process has the advantage that there is no risk of formation of undesirable black cores, even in the production of thick-walled ceramic products.

Method for producing light ceramic materials

A method of producing a trafficway marking, the method including applying a cold plastic to a trafficway surface, to obtain the trafficway marking, where, in less than 5 minutes after the applying, the trafficway marking can withstand the passage of traffic, and where the cold plastic includes from 15% to 45% by weight of a reactive resin; from 1% to 5% by weight of a mixture comprising an initiator; from 7% to 15% by weight of an inorganic pigment; and from 50% to 60% by weight of a mineral filler.

Binding agent for producing road markings ready quickly for traffic

The invention relates to methacrylate resins and to their use.

Methacrylate resins for producing road markings

The present invention comprises a novel formulation for marking travel lanes, such as roads, which following the application can be reopened for traffic after a waiting period that is shortened as compared to the prior art.

An intumescent coating composition and a process for curing the coating to obtain an intumescent coating is provided. The intumescent coating composition contains a thermoplastic polymer which comprises as a copolymerized component, an acid (meth)acrylate or a copolymerizable polyfunctional carboxylic acid; at least one ethylenically unsaturated monomer; an azo or organic peroxide initiator; an acid source; a carbon source; and a gas source.

Intumescent coating composition with enhanced metal adhesion

The invention relates to a coating formulation with improved metal adhesion.

Coating formulation with enhanced metal adhesion

An aqueous dispersion, having a silicon dioxide powder having a silicon dioxide content of 10 to 60 wt.%, wherein the aqueous dispersion is stable in the pH range of 2 to 6, the aqueous dispersion additionally contains at least one compound, which is at least partially soluble in aqueous solution in the pH range 2 to 6 in the form of polyvalent cations, these being stable in a silicate-like environment as an anionic component of the particle surface of the silicon dioxide powder, the quantity of cation-providing compound in relation to the surface of the silicon dioxide is 0.001 to 0.1 mg cation-providing compound/msilicon dioxide surface, the cation-providing compound being calculated as the oxide, and the zeta potential of the aqueous dispersion has values of less than or equal to zero.

Stabilized, aqueous silicon dioxide dispersion

Granules based on pyrogenically prepared silicon dioxide doped with aluminum oxide by means of an aerosol, method of producing same, and use thereof

Granules based on pyrogenically produced aluminium oxide, process for the production thereof and use thereof

Growing community of inventors

Limburg, Germany

Peter Neugebauer